子晴的编程日记

摘要： //using System.Text.RegularExpressions; public static bool IsNumeric(string value) { return Regex.IsMatch(value, @"^[+-]?\d*[.]?\d*$"); } public stati 阅读全文

摘要： private static SqlConnection mySqlConnection; private static bool IsCanConnectioned = false; public bool GetConnection() { mySqlConnection = new SqlCo 阅读全文

摘要： private bool ChkDate(string str) { try { DateTime t1 = DateTime.Parse(str); return true; //返回真 } catch { return false; } } 阅读全文